2019-10-28 21:20:27 +01:00
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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"""!
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____ ____ ______ __ __ __ _____
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/ __ )/ __ \/ ___/ | / /___ _/ /______/ /_ |__ /
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/ __ / / / /\__ \| | /| / / __ `/ __/ ___/ __ \ /_ <
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/ /_/ / /_/ /___/ /| |/ |/ / /_/ / /_/ /__/ / / / ___/ /
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/_____/\____//____/ |__/|__/\__,_/\__/\___/_/ /_/ /____/
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German BOS Information Script
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by Bastian Schroll
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@file: sdrInput.py
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@date: 28.10.2018
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@author: Bastian Schroll
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@description: Input source for sdr with rtl_fm
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"""
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import logging
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2021-01-06 22:21:02 +01:00
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import time
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2019-10-28 21:20:27 +01:00
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from boswatch.utils import paths
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from boswatch.processManager import ProcessManager
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from boswatch.inputSource.inputBase import InputBase
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logging.debug("- %s loaded", __name__)
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class SdrInput(InputBase):
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"""!Class for the sdr input source"""
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def _runThread(self, dataQueue, sdrConfig, decoderConfig):
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sdrProc = None
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mmProc = None
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try:
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sdrProc = ProcessManager(str(sdrConfig.get("rtlPath", default="rtl_fm")))
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sdrProc.addArgument("-d " + str(sdrConfig.get("device", default="0"))) # device id
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sdrProc.addArgument("-f " + str(sdrConfig.get("frequency"))) # frequencies
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sdrProc.addArgument("-p " + str(sdrConfig.get("error", default="0"))) # frequency error in ppm
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sdrProc.addArgument("-l " + str(sdrConfig.get("squelch", default="1"))) # squelch
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sdrProc.addArgument("-g " + str(sdrConfig.get("gain", default="100"))) # gain
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2022-02-18 19:34:00 +01:00
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if sdrConfig.get("fir_size", default=None):
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2022-01-23 11:06:24 +01:00
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sdrProc.addArgument("-F " + str(sdrConfig.get("fir_size"))) # fir_size
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2019-10-28 21:20:27 +01:00
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sdrProc.addArgument("-M fm") # set mode to fm
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sdrProc.addArgument("-E DC") # set DC filter
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sdrProc.addArgument("-s 22050") # bit rate of audio stream
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sdrProc.setStderr(open(paths.LOG_PATH + "rtl_fm.log", "a"))
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sdrProc.start()
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2020-07-08 20:33:58 +02:00
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mmProc = self.getDecoderInstance(decoderConfig, sdrProc.stdout)
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2019-10-28 21:20:27 +01:00
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mmProc.start()
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logging.info("start decoding")
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while self._isRunning:
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if not sdrProc.isRunning:
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2021-01-06 22:21:02 +01:00
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logging.warning("rtl_fm was down - trying to restart in 10 seconds")
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time.sleep(10)
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2019-10-28 21:20:27 +01:00
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sdrProc.start()
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2021-01-06 22:21:02 +01:00
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if sdrProc.isRunning:
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logging.info("rtl_fm is back up - restarting multimon...")
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mmProc.setStdin(sdrProc.stdout)
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mmProc.start()
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2019-10-28 21:20:27 +01:00
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elif not mmProc.isRunning:
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logging.warning("multimon was down - try to restart")
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mmProc.start()
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elif sdrProc.isRunning and mmProc.isRunning:
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line = mmProc.readline()
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if line:
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self.addToQueue(line)
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except:
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logging.exception("error in sdr input routine")
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finally:
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mmProc.stop()
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sdrProc.stop()
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